/* Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-color: #667eea;
  --secondary-color: #764ba2;
  --accent-color: #f093fb;
  --bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --card-bg: #ffffff;
  --text-primary: #2d3748;
  --text-secondary: #718096;
  --border-color: #e2e8f0;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
  --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
  min-height: 100vh;
  color: var(--text-primary);
  line-height: 1.6;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 20px;
}

/* Header */
header {
  text-align: center;
  padding: 40px 20px;
  background: var(--bg-gradient);
  border-radius: var(--radius-lg);
  margin-bottom: 30px;
  box-shadow: var(--shadow-lg);
  color: white;
}

header h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 10px;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

header h1 i {
  margin-right: 15px;
}

.subtitle {
  font-size: 1.1rem;
  opacity: 0.9;
  font-weight: 300;
}

/* Breadcrumb */
.breadcrumb {
  background: var(--card-bg);
  padding: 15px 20px;
  border-radius: var(--radius-md);
  margin-bottom: 30px;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  overflow-x: auto;
}

.breadcrumb-item {
  color: var(--primary-color);
  text-decoration: none;
  padding: 8px 15px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
  white-space: nowrap;
  opacity: 0;
  transform: translateY(-10px);
}

.breadcrumb-item.animate-in {
  animation: slideDown 0.4s forwards;
}

@keyframes slideDown {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.breadcrumb-item:hover {
  background: var(--bg-gradient);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.breadcrumb-separator {
  color: var(--text-secondary);
  font-size: 0.8rem;
}

/* Section Titles */
.section-title {
  font-size: 1.3rem;
  font-weight: 600;
  margin: 30px 0 20px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.section-title i {
  color: var(--primary-color);
}

/* Folders Grid */
.folders-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
  margin-bottom: 40px;
}

.folder-card {
  background: var(--card-bg);
  padding: 30px;
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--text-primary);
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 15px;
  cursor: pointer;
  opacity: 0;
  transform: translateY(20px);
  position: relative;
  overflow: hidden;
}

.folder-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-gradient);
  opacity: 0;
  transition: var(--transition);
}

.folder-card.animate-in {
  animation: fadeInUp 0.5s forwards;
}

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.folder-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.folder-card:hover::before {
  opacity: 0.05;
}

.folder-icon {
  font-size: 4rem;
  color: var(--primary-color);
  transition: var(--transition);
  position: relative;
  z-index: 1;
}

.folder-card:hover .folder-icon {
  transform: scale(1.1);
  color: var(--secondary-color);
}

.folder-name {
  font-weight: 600;
  text-align: center;
  word-break: break-word;
  position: relative;
  z-index: 1;
}

/* Images Grid */
.images-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 25px;
  margin-bottom: 40px;
}

.image-card {
  background: var(--card-bg);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  opacity: 0;
  transform: translateY(20px);
}

.image-card.animate-in {
  animation: fadeInUp 0.5s forwards;
}

.image-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.image-wrapper {
  position: relative;
  width: 100%;
  padding-top: 75%;
  overflow: hidden;
  background: #f7fafc;
}

.image-wrapper img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.image-card:hover .image-wrapper img {
  transform: scale(1.1);
}

.image-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 15px;
  opacity: 0;
  transition: var(--transition);
}

.image-card:hover .image-overlay {
  opacity: 1;
}

.btn-view,
.btn-download {
  background: white;
  color: var(--primary-color);
  border: none;
  padding: 12px 18px;
  border-radius: 50%;
  cursor: pointer;
  transition: var(--transition);
  font-size: 1.2rem;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transform: translateY(20px);
}

.image-card:hover .btn-view,
.image-card:hover .btn-download {
  transform: translateY(0);
}

.btn-view:hover,
.btn-download:hover {
  background: var(--primary-color);
  color: white;
  transform: scale(1.1) translateY(0);
  box-shadow: var(--shadow-md);
}

.image-info {
  padding: 15px;
}

.image-name {
  font-weight: 600;
  margin-bottom: 5px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--text-primary);
}

.image-meta {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 80px 20px;
  color: var(--text-secondary);
}

.empty-state i {
  font-size: 5rem;
  margin-bottom: 20px;
  opacity: 0.3;
}

.empty-state p {
  font-size: 1.2rem;
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.95);
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.modal.show {
  opacity: 1;
}

.modal-content {
  position: relative;
  max-width: 90%;
  max-height: 90vh;
  animation: zoomIn 0.3s;
}

@keyframes zoomIn {
  from {
    transform: scale(0.8);
  }

  to {
    transform: scale(1);
  }
}

.modal-content img {
  width: 100%;
  height: auto;
  max-height: 80vh;
  object-fit: contain;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
}

.modal-close {
  position: absolute;
  top: -50px;
  right: 0;
  color: white;
  font-size: 40px;
  font-weight: bold;
  cursor: pointer;
  transition: var(--transition);
  z-index: 1001;
}

.modal-close:hover {
  color: var(--accent-color);
  transform: rotate(90deg);
}

.modal-caption {
  color: white;
  text-align: center;
  padding: 20px;
  font-size: 1.1rem;
  font-weight: 500;
}

.modal-download {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-gradient);
  color: white;
  padding: 12px 30px;
  border-radius: var(--radius-md);
  text-decoration: none;
  margin: 20px auto;
  font-weight: 600;
  transition: var(--transition);
  box-shadow: var(--shadow-md);
}

.modal-download:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* Responsive Design */

/* Tablet */
@media (max-width: 1024px) {
  header h1 {
    font-size: 2rem;
  }

  .images-grid {
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 20px;
  }

  .folders-grid {
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  }
}

/* Mobile */
@media (max-width: 768px) {
  .container {
    padding: 15px;
  }

  header {
    padding: 30px 15px;
    margin-bottom: 20px;
  }

  header h1 {
    font-size: 1.8rem;
  }

  .subtitle {
    font-size: 1rem;
  }

  .breadcrumb {
    padding: 12px 15px;
    font-size: 0.9rem;
  }

  .breadcrumb-item {
    padding: 6px 12px;
  }

  .section-title {
    font-size: 1.1rem;
    margin: 20px 0 15px;
  }

  .images-grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 15px;
  }

  .folders-grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 15px;
  }

  .folder-card {
    padding: 20px;
  }

  .folder-icon {
    font-size: 3rem;
  }

  .btn-view,
  .btn-download {
    width: 45px;
    height: 45px;
    font-size: 1rem;
    padding: 10px;
  }

  .modal-content {
    max-width: 95%;
  }

  .modal-close {
    top: -40px;
    font-size: 35px;
  }

  .modal-caption {
    font-size: 0.95rem;
    padding: 15px;
  }
}

/* Small Mobile */
@media (max-width: 480px) {
  header h1 {
    font-size: 1.5rem;
  }

  header h1 i {
    margin-right: 8px;
  }

  .images-grid {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 12px;
  }

  .folders-grid {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 12px;
  }

  .folder-card {
    padding: 15px;
  }

  .folder-icon {
    font-size: 2.5rem;
  }

  .folder-name {
    font-size: 0.9rem;
  }

  .image-info {
    padding: 10px;
  }

  .image-name {
    font-size: 0.85rem;
  }

  .image-meta {
    font-size: 0.75rem;
  }

  .btn-view,
  .btn-download {
    width: 40px;
    height: 40px;
    font-size: 0.9rem;
    padding: 8px;
    gap: 10px;
  }

  .modal-download {
    padding: 10px 20px;
    font-size: 0.9rem;
  }
}

/* Loading Animation */
@keyframes pulse {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.5;
  }
}

img[loading="lazy"]:not(.loaded) {
  animation: pulse 2s infinite;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: #f1f1f1;
  border-radius: 10px;
}

::-webkit-scrollbar-thumb {
  background: var(--primary-color);
  border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--secondary-color);
}

/* Focus Styles for Accessibility */
a:focus,
button:focus {
  outline: 3px solid var(--accent-color);
  outline-offset: 2px;
}

/* Print Styles */
@media print {

  .breadcrumb,
  .btn-view,
  .btn-download,
  .image-overlay {
    display: none;
  }

  .image-card {
    break-inside: avoid;
  }
}